liferoad opened a new pull request, #36881:
URL: https://github.com/apache/beam/pull/36881
This commit resolves all 31 compilation errors in the :runners:spark:4
module, enabling successful compilation with Spark 4.0.0-preview2, Scala 2.13,
and Java 17.
Key changes:
1. Scala 2.13 API Compatibility:
- Replaced TraversableOnce with IterableOnce
- Changed scala.Serializable to java.io.Serializable
- Fixed union() method ambiguity by explicitly specifying type parameters
- Modified ScalaInterop.seqOf() to return scala.collection.immutable.Seq
2. ExpressionEncoder Constructor Migration:
- Implemented reflection-based approach in EncoderFactory to handle Spark
4.x API changes
- Attempts to use ExpressionEncoder.apply with FlatEncoder wrappers
- Added @SuppressWarnings("nullness") for Checker Framework compatibility
3. updateStateByKey Signature Adaptation:
- Created Function2 adapter in SparkGroupAlsoByWindowViaWindowSet
- Wrapped iterator-based UpdateStateByKeyFunction to match Spark 4.x
signature
- Changed from Seq to scala.collection.immutable.Seq
4. Nullness Annotations:
- Added @SuppressWarnings("nullness") in EvaluationContext for Checker
Framework
Fixes #36841
**Please** add a meaningful description for your change here
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